Question

It evaluates the text expressions​

Answer 1

Explanation:

You can enter any valid expression into the text field. The Dart Language specification has a section on what constitutes a valid expression. If the expression is not valid, an error message displays.

The scope of the evaluation depends on where you are in Observatory’s UI:

From any isolate screen, you can evaluate expressions in the context of the root library of that isolate.

From any library screen, you can evaluate expressions in the context of that library.

From any class screen, you can evaluate expressions in the context of that class. For example, you might query or change the value of a static class variable.

From any instance screen, you can evaluate expressions in the context of that instance.

While the scope is different in these situations, the process of evaluation is the same.